Home
Basic Dirt Bike How-To's - Video
Dirt Bike How-To's - Video
Living The Moto Life - Video
Bike Tests | Shoot-Outs - Video
Forums
What's new
Latest activity
Log-In
Join
What's new
Menu
Log-In
Join
Navigation
Install the app
Install
More options
Close Menu
Forums
Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
2003 YZ450F "ColdBlooded Issue"
Reply to thread
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Message
[QUOTE="_JOE_, post: 1392219, member: 77507"] Sounds like a pilot circuit jetting issue. If it has a pipe and stock jetting you're pissin in the wind. You need to get comfortable with tuning the carb as it will change with conditions/engine wear. You'll most likely be able to get it to start decent with feul screw adjustments but if you end up more than two and a half turns out or less than one you should change the pilot jet. You might as well grab a couple main jets while you're at it and experiment with them too because you might have alot more potential for top end pull. The needle can really help how smooth the midrange is. Most bikes(4 strokes) come stock with really lean jetting. You can check FMF's website for a starting point with the pipe. [/QUOTE]
Verification
Which ocean is California closest to?
Post reply
Forums
Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
2003 YZ450F "ColdBlooded Issue"
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
Accept
Learn more…
Top
Bottom